Average travel times in Honolulu are 31 percent longer than when traffic flow freely, according to the report. There are also 34 minute delays per hour during peak periods.

The worst times to be on the road in Honolulu? -- Tuesday mornings and Thursday nights. The lightest traffic days were Monday mornings and Wednesday nights.

Wondering whether to take the freeway or surface streets? TomTom says non-highways saw more congestion (40 percent) than highways this quarter (21 percent).

Only Los Angeles, Vancouver, and San Francisco had worse traffic than Honolulu.

The top five worst traffic cities in North America were all on the West Coast.

TomTom’s quarterly Congestion Index report provides traffic analysis and congestion trends for major cities across the U.S. and Canada. The report analyzes GPS data for major cities across the U.S. and Canada, encompassing 57 metropolitan areas with a population of more than 950,000.

TomTom is a supplier of in-car location and navigation products.

The following is the top 10 most congested North American cities, ranked by overall Congestion Level, between July and September 2012: